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LDPE — high-pressure polyethylene: features, properties, and applications

LDPE stands for Low-Density Polyethylene. This material is internationally known by the same abbreviation — LDPE. Due to its unique characteristics, LDPE is widely used in the production of packaging materials, household items, and construction and agricultural films. Its popularity stems from a combination of flexibility, light weight, and chemical resistance.

What is LDPE?

Low-Density Polyethylene is produced through the polymerization of ethylene at high temperatures (150–300°C) and pressure (1000–3000 atm) using radical initiation. This results in a polymer with a branched molecular structure that gives the material softness, elasticity, and excellent processability.

The chemical formula for LDPE is (C2H4)n, where "n" represents the number of monomer units in the polyethylene macromolecule.

Main Properties of LDPE

  • Low density — around 0.91–0.925 g/cm³;
  • High flexibility and elasticity;
  • Softness and ease of forming;
  • Excellent transparency — ideal for packaging where product visibility matters;
  • Moisture and chemical resistance;
  • Low crystallization temperature — allows usage at lower temperatures;
  • Easy to recycle;
  • Electrical insulation properties.

Applications of LDPE

  • Packaging — production of food bags, pouches, and wrapping films;
  • Construction — vapor barrier and waterproofing membranes;
  • Agriculture — greenhouse films, mulch covers for soil protection;
  • Household goods — shopping bags, garbage bags, disposable products;
  • Industry — protective wrapping for palletized goods and technical packaging.

LDPE vs HDPE

To choose the right material for your needs, it's important to understand the differences between LDPE and HDPE:

  • LDPE — flexible, soft, stretchable, and highly transparent. Best suited for lightweight and food-grade packaging;
  • HDPE — rigid, strong, puncture- and tear-resistant. Commonly used for durable bags, pipes, and industrial packaging.

LDPE is chosen where flexibility and transparency are important, while HDPE is ideal for high mechanical strength.

Benefits of Using LDPE

  • Excellent transparency for product visibility;
  • High elasticity and user-friendly handling;
  • Suitable for both ultra-thin and thick packaging materials;
  • Affordable raw material and production cost;
  • Eco-friendly recyclability after use.

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LDPE Bags from Cherpack

At cherpack.net, we offer LDPE bags wholesale for business use: packing pouches, shopping bags, and food-grade packaging with custom logo printing. We produce according to individual specifications, guarantee quality, and deliver across Ukraine. Order from Cherpack — where your products are packed safely and stylishly!